root@ip-10-60-1-9:/opt# ps -ef | grep guacd
root 5727 1 0 17:35 ? 00:00:00 guacd
root 5782 1939 0 17:37 pts/0 00:00:00 grep --color=auto guacd
From: Nick Couchman <firstname.lastname@example.org>
Sent: Wednesday, April 10, 2019 1:32 PM
Subject: Re: Help with Guacamole 0.9.9
On Wed, Apr 10, 2019 at 1:29 PM Abner, Michael (SAMHSA/OMTO) <Michael.Abner@samhsa.hhs.gov> wrote:
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
[http-nio-8080-exec-10] ERROR o.g.g.w.GuacamoleWebSocketTunnelEndpoint - Creation of WebSocket tunnel to guacd failed: java.net.ConnectException: Connection refused (Connection refused)
A couple of things:
1) You should run a newer version than 0.9.9. That version was released...a while ago. 1.0.0 is the current version, and 1.1.0 is on the way. I think Ubuntu/Debian has a package available, but it hasn't been maintained by anyone recently, so it's several years behind.
2) Regarding the error you're seeing, is guacd actually running?